How did the early Earth transition from an inorganic world to one rich in chemically reactive building blocks? We explore the "Frankenstein" scenario, investigating whether high-energy electron-driven processes (such as those occurring during lightning strikes) could transform inert surface inventories into the initial ingredients for life1. By subjecting salty aqueous reservoirs to electrical discharges (i.e., plasma) at the gas-liquid interface, we simulate a geologically plausible high-energy reaction zone found on the prebiotic Earth or icy planetary bodies. This process drives the divergent synthesis of essential bio-building blocks from abundant C1 and N1 feedstocks (e.g., ammonium formate). We report the direct formation of amino acids (e.g., glycine) alongside a suite of energetic C-N cross-coupling products and catalytic heterocycles. In-situ characterization of reactive intermediates and stable products reveals that these electrified interfaces function as high-flux radical recombination zones. These findings suggest that the common weather phenomena (e.g., lightning) could have contributed to the necessary chemical complexity for life to emerge on Earth and potentially on other rocky or icy worlds.